book_and_pay

Book and pay for a service using a quote

SERVERMIDAS Protocol SOURCEhttps://mcp.midasprotocol.org/mcp

Critical RISK CLASS

Category Financial

Parameters 21 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-bbrainfrance-midas-protocol/book-and-pay.md

WHAT IT DOES

What book_and_pay does on MIDAS Protocol

AI agents use book_and_pay to commit financial operations through MIDAS Protocol, usually the final step of a payment, billing, or trading workflow. A call moves real money.

Parameter	Type	Required	Description
`payWith`	string	—
`quoteId`	string	Yes

Parameters from the server's own tool schema.

RISK

Why book_and_pay is rated Critical

This tool commits financial obligations by processing payments. Even with a 'using a quote' qualifier, the primary function is to move money or charge funds for services. Misuse by an AI agent could result in unauthorized charges, overpayment, or payment to wrong recipients. This is the most severe risk category applicable.

From the tool's definition Tool name 'book_and_pay' explicitly combines booking with payment execution. Description states 'pay for a service', indicating funds movement.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs book_and_pay safely

PolicyLayer is an MCP gateway: it sits between your AI agents and MIDAS Protocol, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For book_and_pay, this is the rule to start with:

book_and_pay Approval-gated

Any call to book_and_pay is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "book_and_pay": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect MIDAS Protocol, apply this rule, and every book_and_pay call is checked against it from then on.

FAQ

Questions about book_and_pay

What does the book_and_pay tool do? +

Book and pay for a service using a quote. It is categorised as a Financial tool in the MIDAS Protocol MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

What parameters does book_and_pay accept? +

book_and_pay accepts 2 parameters: payWith, quoteId. Required: quoteId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on book_and_pay? +

Register the MIDAS Protocol MCP server in PolicyLayer and add a rule for book_and_pay: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches MIDAS Protocol. Nothing to install.

What risk level is book_and_pay? +

book_and_pay is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit book_and_pay? +

Yes. Add a rate_limit block to the book_and_pay rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block book_and_pay completely? +

Set action: deny in the PolicyLayer policy for book_and_pay. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides book_and_pay? +

book_and_pay is provided by the MIDAS Protocol MCP server (https://mcp.midasprotocol.org/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on MIDAS Protocol, and thousands of servers like it.

This server

All 44 MIDAS Protocol tools → Critical-risk tools on this server →

Across the catalogue

pay_invoice on Bitcoin MCP Server → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →